Get DNS service status

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and destructiveHint=false, so safety is covered. The description adds genuinely non-structured context by naming the required authorization scope ('Requires dns:read when using an API key'), which an agent needs before invoking and which annotations do not express.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

A single well-front-loaded sentence leads with the verb and resource, then lists the payload fields, and closes with the auth requirement. No filler and nothing to trim.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

There is no output schema, but the description compensates by enumerating the principal return fields and the required scope, which is what an agent needs for a zero-parameter read tool. Minor gap: it doesn't describe response shape or error behavior, but for a status probe this is close to complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool takes zero parameters, so the baseline of 4 applies per the rubric. There is nothing further the description could add on parameter meaning.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Get the VPSNet DNS cluster status') and then enumerates exactly what is returned: anycast service health, node count, public nameservers, recursive resolver IPs. This clearly distinguishes it from the many sibling DNS tools, which operate on zones, records, and templates rather than cluster-wide service state.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage by naming concrete consumer scenarios ('nameservers to delegate domains to', 'resolver IPs to use on VPSNet servers'), so an agent can infer when the data is useful. However, it never states when to prefer this over alternatives or any exclusions, so guidance stays implicit.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.